EP1897209B1 - Rotor comportant une roue de ventilateur destine a un moteur electrique a commutation electronique - Google Patents

Rotor comportant une roue de ventilateur destine a un moteur electrique a commutation electronique Download PDF

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Publication number
EP1897209B1
EP1897209B1 EP06763819A EP06763819A EP1897209B1 EP 1897209 B1 EP1897209 B1 EP 1897209B1 EP 06763819 A EP06763819 A EP 06763819A EP 06763819 A EP06763819 A EP 06763819A EP 1897209 B1 EP1897209 B1 EP 1897209B1
Authority
EP
European Patent Office
Prior art keywords
rotor
shaft
fan
rotor body
bush
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP06763819A
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German (de)
English (en)
Other versions
EP1897209A1 (fr
Inventor
Gerhard Sturm
Wilhelm Reinhardt
Gunter Streng
Markus Gelbing
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebm Papst Mulfingen GmbH and Co KG
Original Assignee
Ebm Papst Mulfingen GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ebm Papst Mulfingen GmbH and Co KG filed Critical Ebm Papst Mulfingen GmbH and Co KG
Publication of EP1897209A1 publication Critical patent/EP1897209A1/fr
Application granted granted Critical
Publication of EP1897209B1 publication Critical patent/EP1897209B1/fr
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/0633—Details of the magnetic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/064—Details of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • B29L2031/087—Propellers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the present invention relates to a rotor with a fan, in particular as an external rotor for an electronically commutated electric motor, with a rotor body which is connected via a shaft bushing with a rotor shaft and on its inside magnetic segments, which are covered by a return ring, and on its outside fan blades has,
  • the cylindrical rotor body rotates about the internal fixed stator.
  • the current application in the stator windings occurs wear-free electronically.
  • the rotor consists of permanent magnets, which generate a time constant magnetic field between their poles and a permanent magnet enclosing return ring, which closes the magnetic circuit.
  • a fan drive fan blades are according to the prior art mounted on the outside of the rotor body.
  • Such a fan arrangement is designed as a mini fan.
  • the rotor body according to the invention description is preferably made of plastic and has in its center a molded hub, in which the rotor shaft is directly attached by plastic injection molding. A hub as originally separate part is not provided.
  • jerky discharge currents can flow via the current flow chain rotor-axis-bearing, thereby destroying the bearings by erosive damage to the balls and raceways.
  • the pamphlet DE 203 06 902 U1 describes how bearing damage can be avoided by additional insulation elements.
  • the present invention is based on the object, a rotor with fan
  • Fig. 1 shows an overall view of a rotor 2 according to the invention with fan 4.
  • the integrally molded by a plastic extrusion 3 fan 4 consists of a substantially cylindrical rotor body 6, the actual rotor 2 (hidden, see Fig. 2 ) and a shaft bush 10 (hidden, see Fig. 3
  • a cylindrical wall 14 of the rotor body 6 is closed on the sleeve side via a conical wall 16 with a cover wall 18.
  • the conical wall 16 has external, distributed over the circumference arranged radially-axially extending stiffening ribs 20.
  • top wall 18 On the outer side of the top wall 18 extend between an inner annular web 19 a and an outer annular web 19 b radially extending annular webs 21, which in the interior of the cylindrical rotor body 6 as ribs 22 (hidden, see Fig. 4 and 5 ) continue.
  • the fan blades 12 On the outside of the cylindrical wall 14 of the rotor body 6 are distributed over the circumference similar fan blades 12 are formed.
  • the fan blades 12 have in crescent shape their front with respect to the direction of rotation R 30 and rear 32 wing edge largely radially outward, starting with an axial offset between the wing leading edge 30 and wing trailing edge 32, and close to the radially outer edge 34 from.
  • the fan blades 12 are formed between the blade shoulder on the cylindrical wall 14 of the rotor body 6 and the blade end with a twist.
  • flow elements 36 are formed.
  • the flow elements 36 reduce the fluidic losses by hindering the flow around the outer edge 34 from the pressure to the suction side equalizing flow.
  • the flow elements 36 are designed as axial webs along the radially outer edge 34 opposite to the main flow direction, extending toward the suction side.
  • grooves 38 are formed, which serve to receive balancing elements.
  • Fig. 2 shows the rotor 2. This consists of a cylindrical metal ring, the return ring 44, the inside of which is completely lined with magnetic segments 42.
  • the magnet segments 42 are preassembled as shown in the embodiment in two axially adjacent rows of ten magnetic segments 42 and have circumferentially to each other a small circumferential angular displacement phi.
  • single-row magnet segments known from the prior art are also possible.
  • Fig. 3 shows the shaft bushing 10 with a rotor shaft 11.
  • the shaft bushing 10 has a bushing shaft 50, in which one end of the rotor shaft 11 is pressed, welded or otherwise secured.
  • the bushing 50 continues to this end in the radial plane as a circular flange 52 with a plurality of holes 54 on.
  • the free end of the rotor shaft 11 is provided with a circumferential thickening 13, which merges into a shoulder 15 of smaller shaft diameter.
  • the in the FIGS. 2 and 3 arrangements shown are placed in a plastic injection mold and surrounded with the plastic extrusion 3.
  • the fan 4 manufactured by the plastic extrusion 3 with rotor body 6 and fan blades 12 is in Fig. 4 to be seen in axial section.
  • a circumferential annular collar 17 is externally formed, from which extend the outer edges of the stiffening ribs 20 to the top wall 18 out.
  • the plastic extrusion encloses the circular flange lying in the radial plane 52 of the shaft bushing 10 and penetrates the bores 54.
  • the bushing shaft 50 of the shaft bushing 10 and a short adjoining the bushing shaft portion 51 of the rotor shaft 11 are formed by the encapsulation of a bushing jacket 56 enclosed by the inner stiffening ribs 22 extend in the radial direction to the inside of the conical wall 16 of the rotor body 6.
  • the cylindrical wall 14 has at its free end to the top wall 18 opposite edge 46, which is formed as part of a Labyrithdichtung for protection against moisture.
  • the boundary 46 consists in the manner of a double wall of two concentric wall sections 48 a, b, between which a circumferential groove 49 is formed.
  • Fig. 5 shows the interior of the rotor body 6 in axial section.
  • the internal ribs 22 which extend from the bushing jacket 56 in the radial direction outwards to the inside of the conical wall 16 of the rotor body 6.
  • the ribs 22 act as cooling wings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (4)

  1. Rotor (2) avec roue de ventilateur (4), en particulier sous forme de rotor extérieur pour un moteur électrique à commutation électronique, comprenant un corps de rotor (6) relié à un arbre de rotor (11) par un coussinet (10) et présentant sur sa face intérieure des segments magnétiques (42) entourés d'une bague de retour de flux magnétique (44), dans lequel les segments magnétiques (42) sont prémontés sur la bague de retour de flux magnétique (44) et sont avec le coussinet (10) entourés d'un enrobage plastique intégral (3) qui réalise en même temps le corps de rotor (6) avec la roue de ventilateur (4),
    caractérisé en ce que la roue de ventilateur (4) présente comme ventilateur axial des ailettes de ventilateur (12) formées sur la face extérieure du corps de rotor (6) avec des bords d'ailette avant (30) et des bords d'ailettes arrière (32) par rapport au sens de rotation (R), ainsi qu'avec des bords (34) situés radialement à l'extérieur, dans lequel les ailettes de ventilateur (12) présentent sur leurs bords d'ailettes avant (30) et arrière (32) des rainures (38) pour recevoir de façon mobile des éléments d'équilibrage ainsi que des éléments d'écoulement (36) en forme d'entretoise, conformés au niveau de leurs bords (34) situés radialement à l'extérieur, pour réduire le courant de perte, et dans lequel le corps de rotor cylindrique (6) présente une bordure (46) opposée à une paroi de recouvrement (18) et présentant deux entretoises (48a, b) espacées par une rainure (49) faisant partie d'une garniture en labyrinthe pour la protection contre l'humidité.
  2. Rotor selon la revendication 1,
    caractérisé en ce que le coussinet (10) est fixé sur l'arbre de rotor (10) à une extrémité de celui-ci.
  3. Rotor selon la revendication 1 ou 2,
    caractérisé en ce que le corps de rotor cylindrique (6) présente des nervures (22) conformées dans l'espace intérieur, s'étendant de façon radiale et axiale et ayant une fonction de refroidissement.
  4. Rotor selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que le coussinet (10) se compose d'une tige de coussinet (50) et d'une bride (52) circulaire réalisée dans un plan radial par rapport à celle-ci, ladite bride étant munie d'une pluralité de perçages (54).
EP06763819A 2005-06-23 2006-06-21 Rotor comportant une roue de ventilateur destine a un moteur electrique a commutation electronique Active EP1897209B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202005010000U DE202005010000U1 (de) 2005-06-23 2005-06-23 Rotor mit Lüfterrad für einen elektronisch kommutierten Elektromotor
PCT/EP2006/063416 WO2006136585A1 (fr) 2005-06-23 2006-06-21 Rotor comportant une roue de ventilateur destine a un moteur electrique a commutation electronique

Publications (2)

Publication Number Publication Date
EP1897209A1 EP1897209A1 (fr) 2008-03-12
EP1897209B1 true EP1897209B1 (fr) 2011-08-03

Family

ID=36867560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06763819A Active EP1897209B1 (fr) 2005-06-23 2006-06-21 Rotor comportant une roue de ventilateur destine a un moteur electrique a commutation electronique

Country Status (4)

Country Link
EP (1) EP1897209B1 (fr)
AT (1) ATE519264T1 (fr)
DE (1) DE202005010000U1 (fr)
WO (1) WO2006136585A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD938011S1 (en) 2019-12-10 2021-12-07 Regal Beloit America, Inc. Fan blade
USD938009S1 (en) 2019-12-10 2021-12-07 Regal Beloit America, Inc. Fan hub
USD938010S1 (en) 2019-12-10 2021-12-07 Regal Beloit America, Inc. Fan hub
USD952830S1 (en) 2019-12-10 2022-05-24 Regal Beloit America, Inc. Fan shroud
US11371517B2 (en) 2019-12-10 2022-06-28 Regal Beloit America, Inc. Hub inlet surface for an electric motor assembly
US11555508B2 (en) 2019-12-10 2023-01-17 Regal Beloit America, Inc. Fan shroud for an electric motor assembly
US11670977B2 (en) 2019-04-24 2023-06-06 Black & Decker Inc. Outer rotor brushless motor stator mount
EP4195472A3 (fr) * 2021-12-10 2023-08-02 Black & Decker, Inc. Ensemble moteur à rotor externe
US11859634B2 (en) 2019-12-10 2024-01-02 Regal Beloit America, Inc. Fan hub configuration for an electric motor assembly
EP4135162A4 (fr) * 2020-04-07 2024-05-22 Johnson Electric Int Ag Outil électrique, moteur et rotor associé

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008010913A1 (de) 2007-02-28 2008-09-11 Sew-Eurodrive Gmbh & Co. Kg Elektromotor
EP2132861B1 (fr) 2007-02-28 2018-11-21 SEW-EURODRIVE GmbH & Co. KG Moteur électrique
CN101752935B (zh) * 2008-12-03 2011-07-20 中山大洋电机股份有限公司 一种外转子电机的壳体结构及利用该壳体制造的转子部件
DE102009045655A1 (de) * 2009-10-14 2011-04-21 Robert Bosch Gmbh Vollintegriertes Gebläsemodul
IT1397783B1 (it) * 2010-01-15 2013-01-24 Gate Srl Rotore a magneti permanenti per un motore brushless in corrente continua
WO2012103882A2 (fr) * 2011-01-31 2012-08-09 Ixetic Bad Homburg Gmbh Rotor pour un moteur électrique et moteur électrique
DE102013112922A1 (de) * 2013-11-22 2015-05-28 Ebm-Papst St. Georgen Gmbh & Co. Kg Diagonal- oder Axiallüfter
FR3055240A1 (fr) * 2016-09-01 2018-03-02 Aereco Procede de fabrication d’une turbine d’unite de ventilation
DE102018200202A1 (de) * 2018-01-09 2019-07-11 Volkswagen Aktiengesellschaft Außenläufer-Rotor einer Pumpe und Verfahren zur Herstellung eines Außenläufer-Rotors
DE102018115336A1 (de) * 2018-06-26 2020-01-02 Ebm-Papst St. Georgen Gmbh & Co. Kg Rotor eines Elektromotors
FR3117412A1 (fr) * 2020-12-14 2022-06-17 Valeo Systemes Thermiques Système de ventilation d’un véhicule automobile
FR3117577A1 (fr) * 2020-12-14 2022-06-17 Valeo Systemes Thermiques Système de ventilation d’un véhicule automobile

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DE4143383C2 (de) * 1991-07-03 1995-03-30 Licentia Gmbh Axialgebläse, insbesondere zur Kühlung eines dem Kühler eines Fahrzeugs vorgeordneten Kondensators einer Klimaanlage
DE29615144U1 (de) * 1996-08-30 1998-01-02 Bosch Gmbh Robert Radiallüfter
DE10204037C5 (de) * 2002-02-01 2009-07-23 Ebm-Papst Landshut Gmbh Radialgebläse mit Elektromotor
DE10247310A1 (de) * 2002-10-10 2004-04-22 Siemens Ag Belüftung einer elektrischen Maschine
DE10258346A1 (de) * 2002-12-12 2004-06-24 Steinel Gmbh & Co Kg Bürstenloser Elektromotor
JP2005086967A (ja) * 2003-09-11 2005-03-31 Matsushita Electric Ind Co Ltd 軸流ファンモーター
US7350283B2 (en) * 2003-10-02 2008-04-01 The Bergquist Torrington Company Method for making rotor for permanent magnet electric machine
DE202004010088U1 (de) * 2004-06-25 2004-09-09 Ebm-Papst Mulfingen Gmbh & Co. Kg Laufrad, insbesondere für einen Axialventilator

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11670977B2 (en) 2019-04-24 2023-06-06 Black & Decker Inc. Outer rotor brushless motor stator mount
US11973374B2 (en) 2019-04-24 2024-04-30 Black & Decker Inc. Outer rotor brushless motor having an axial fan
USD938011S1 (en) 2019-12-10 2021-12-07 Regal Beloit America, Inc. Fan blade
USD938009S1 (en) 2019-12-10 2021-12-07 Regal Beloit America, Inc. Fan hub
USD938010S1 (en) 2019-12-10 2021-12-07 Regal Beloit America, Inc. Fan hub
USD952830S1 (en) 2019-12-10 2022-05-24 Regal Beloit America, Inc. Fan shroud
US11371517B2 (en) 2019-12-10 2022-06-28 Regal Beloit America, Inc. Hub inlet surface for an electric motor assembly
US11555508B2 (en) 2019-12-10 2023-01-17 Regal Beloit America, Inc. Fan shroud for an electric motor assembly
USD1002834S1 (en) 2019-12-10 2023-10-24 Regal Beloit America, Inc. Fan hub
US11859634B2 (en) 2019-12-10 2024-01-02 Regal Beloit America, Inc. Fan hub configuration for an electric motor assembly
EP4135162A4 (fr) * 2020-04-07 2024-05-22 Johnson Electric Int Ag Outil électrique, moteur et rotor associé
EP4195472A3 (fr) * 2021-12-10 2023-08-02 Black & Decker, Inc. Ensemble moteur à rotor externe

Also Published As

Publication number Publication date
ATE519264T1 (de) 2011-08-15
WO2006136585A1 (fr) 2006-12-28
DE202005010000U1 (de) 2006-11-09
EP1897209A1 (fr) 2008-03-12

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